azure - Why does VB Audio Virtual Cable work but Stereo Mix Doesn't?

I have been working with the Azure Speech Translation. It works perfectly with a real microphone, and VB Audio Virtual Cable, but if I try to use Stereo Mix as my audio input it doesn't work. It seems that the audio level is too low or there is another issue. I have checked everything I can think of, even recording the audio from the Stereo Mix and it sounds perfect.

I am looking for help to figure out how to get this to work reliably without having to install a third-party virtual audio driver, and simply figure what is causing the issue.

VB Audio Virtual Cable-https://vb-audio.com/Cable/

Code I am using: // Translation from microphone. https://github.com/Azure-Samples/cognitive-services-speech-sdk/blob/master/samples/csharp/sharedcontent/console/translation_samples.cs

I have tested on two PCs with Windows 10 Pro, and another friend's Windows PC.

question from:https://stackoverflow.com/questions/65886059/why-does-vb-audio-virtual-cable-work-but-stereo-mix-doesnt

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